Jessica Simpson struggling with second pregnancy

Copyright 2013 World Entertainment News Network. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

JESSICA SIMPSON's second pregnancy is the "complete opposite" of her first because the pop star is feeling "exhausted" as she prepares to give birth.

The singer/actress and her fiance Eric Johnson are expecting a sibling for their baby daughter Maxwell, who was born last May (12), but Simpson has revealed she is struggling with debilitating sickness.

In an interview with chat show host Ellen DeGeneres, she says, "(The pregnancy has been the) complete opposite (to the first)... With Maxwell, I felt amazing... I could do everything, eat everything. Do whatever I wanted. I had a lot of energy. This time around... I'm... exhausted, eating (antacid tablets) Tums. That's my snack of choice!"

Simpson became a spokesperson for WeightWatchers after giving birth to Maxwell, and she credits the diet firm with helping her control her pregnancy cravings the second time around.

She adds, "The first pregnancy I... let loose and I kind of ate everything that I wanted to eat and I just really enjoyed it. This time around I think because I was doing WeightWatchers and I felt super healthy, I'm not really craving as much and I know how hard it is (to take the weight off) so I'm trying to make healthier, wiser decisions."

The full interview is set to air on Wednesday (06Mar13).

Copyright 2013 World Entertainment News Network. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.